Science in a Nutshell Gears at Work Description: Investigate gear systems and learn how gears interact to transfer force and motion. Compare gears and pulleys and explore devices that show how they work together. Includes: • Activity Guide • Activity Journals • Gears, 3 sizes • Gear Base • Gear Base Cover • Gear Base Diagrams • Gear Handles • Gear Pointers • Gear Stickers • Rubber bands